Gangnam Style has become the first video to clock up more than one billion views on YouTube.
The South Korean dance track was posted online in July, propelling pop star Psy to worldwide fame, the BBC reports.
It has inspired hundreds of parody clips, from members of the British army, Thai navy and Minecraft gamers, among others.
YouTube's owner, Google, said the video had been watched seven million to 10 million times a day on average.
It overtook the previous record holder - Justin Bieber's music video Baby - on 24 November.
One industry watcher said the fact so many people continued to post their own versions of Gangnam Style had played a huge part in the clip's success.
CMU music news site business editor Chris Cooke said he had seen an estimate that the song will have earned $US8 million by the end of the year from money that comes directly from YouTube through advertising, download sales and use in advertisements and TV programmes.
"It shows that YouTube - which is a free-to-use as a promotional platform for the music labels - can lead to substantial income," he told the BBC.